Leaf-flexing machine.



No. 810,540. PATENTED JAN. 23, 1906. H. S. & W. G. JONES.

LEAF FLBXING MACHINE.

APPLICATION FILED NOV. 25, 1904.

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H. s; & W. Gi JONES. LEAF FLEXING MACHINE.

APPLICATION FILED NOV. 25, 1904.

.No. 810,540. IPALIENTED JAN. 23, 1906. H. s. & w. G. JONES. LEAF FLEXING MACHINE.

APPLICATION FILED NOV. 25, 1904.

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No. 810,540. PATENTED JAN. 23, 1906.

H. S. & W. G. JONES.

LEAP FLEXING MACHINE. APPLICATION FILED NOV. 25, 1904.

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No. 810,540. PATENTED JAN. 23, 1906.

H. S. 6: W. G. JONES. LEAF FLEXING MACHINE.

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' No. 810,540. PATEN'I'ED JAN. 2-3, 1906.

' H. S. 6: W. G. JONES.

LEAF FLBXING MACHINE. AAAAAAAAA 0N FAILEDNOV. 25, 1904.

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UNITED STATES PATENT OFFICE.

HARRY SLOPER JONES AND WILLIAM GIFFORD JONES, OF CHICAGO,

ILLINOIS.

Specification of Letters Patent.

rmma Jan. 23, 1906.

Application filed November 26,1904. $eria1Nm23M204- To all whom/it may concern.-

.fracturedover a limited Be it known that We, HARRY SLoPER J ONES and WILL AM Grrronn JONES, citizens of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented a new and useful Improvement in Leaf-Flexing Machines, of which the following is aspecification.

Our invention pertains to the .manufacture of book-leaves having zones of relatively high flexibility parallel with and adjacent to their binding-margins.

Our oughly-practical.1nachine capable .of use in the production on a commercial scale of leaves having their sizing-coatings minutely zone by a suitable flexing operation, the operation being such as to uniformly weaken said coatings as regards stifiness without materially weakening the fiber of the paper or establishing any definite lines of weakness at the treated zone. In the accompanying drawings is illustrated a machine eculiarly adapted to secure the desired resu t in which provision is made for bending a leaf closely upon-itself near its v binding edge and varying or shifting the i .that the leaf is cave; the roll rocked in one place of curvature and then reversing the direction of curvature and varying the location thereof uniformly throughout the same zone.

In 'fact, the machine when geared as shown is adapted to perform a cycle of operations,

serving to a ply the shifting flexure to'the leaf in one irection, then in the reverse direction, then again in the original direction, and, finally, again in the reverse .direction.

In the embodiment shown there are employed an axially-rocking" grippingroll equipped with pneumaticall -actuated jaws, two concaves or shoes located on opposite sides of the plane whereat' the gripping-surfaces of the jaws meet in equipped with suction devices, and means for controlling the movement of the roll, the air-pressure for actuating thejaws thereof, and the suction at the concaves.

The construction and operation are such gripped by the jaws at a position intermediate of the concaves; the roll is direction to the limit, drawin the rear portion of. the leaf between itself an one concave, meantime-to hold the leaf against the conthen returns to its original posiprimary object is to provide a thor gripping the leaf and the suction operating in the other concave, the

view of a machine Fig. 7, a broken perspective .sitions of the tion, turning the paper upon itself at a constantly-shiftin line; the roll continues .its movement and carries the leaf beneath the suction inthe meantime being applied there; the roll then'returns to its startin position, applying a shifting curvature in t e opposite 1rection,:,the same cycle of operation is repeated, andthe pneumatic-pressure mechanism then operates antomatically to release the jaws.

In the drawings, Figure 1 represents a front embodying our invention; Fig. 2, a view of the right side of the machine, (facing with the machine Fig. 3, a view of the-left side of the machine; Fig. 4, a longitudinal vertical section taken as indicated at line 4 of Fig. 1 Fig. 5, a broken horizontal sectional view taken as indicated at line 5 of Fig; 1 and showing a detail of the upper shoe or-concave; Fig. 6, a broken pers ective view showin the parts in one of the ame members w ich coact with the part in the automatically-actuated suction-controlling valve;

view of said suction-controlling valve Figs. 8 to 1 1, inclusive, details of a clutch device, the sections shown a}; Iggs. 10 and 1 1 being indicated at theline 10 O ig. 9; Fig. 12, a' broken view illustrating the operation of the valve controlling the airpressure for actuating the jaw-closing piston; ig. 13, a broken inner face view of the frame member shown in Fig.

of Figs..4 and 12 and'show'ln pressure-controlling valve; igs. 15. and 16; enlarged broken sections taken'as indicated at line 15 of Fig. 121m showing different po-' pressure controlling i valve Fi s. 17 and 18, rear views of the grippingro the former showing theposition of the jaw-closing piston when the jaws are open and the latter showingv the position-when the jaws are closed; Fig. 19, a section taken as indicated at line 19 of Fi .17 Fi'gi'20,a-s'imi'- lar section taken as indicated at line 20 of Fig. 18; Figs. 21 and 22,- sections taken, respectively, at the corres onding lines of Figs. 17 and 18; Figs. 23 an views corresponding, respectively, with the sectional views Figs. 21 and "22'; Fig. 25, a view illustrating a modification; Figs. 26 to 30, inclusive, views diagrammatic in their nature illustratin various ste s in the operiineand Fig 31 a view ation of the mac 24, end elevational' 14; Fig. 14, a 'brokensection taken as indicated at line 14 a detail of the Ice equipped with a clutch device J,

showin a portion of the leaf after treatment and before the leaf has been subjectedto a pressing operation for the purpose of straight-' ening it.

The machine corn rises in its preferred embodiment a frame a jaw-equipped oscillating or rocking roll or rock-cylinder B, journaled in the upper ends of the side members of said frame and equipped with a piston for actuating the jaws; adjustably-supported leaf holding and confining members; concaves or shoes GD in juxtaposition to the roll-B, said members being equipped with suction devices C D, respectively; an automatic suction-controllin' valve E; an airtank having exhaust an pressure compartments F F, respectively; a driving-shaft G, equipped with ti ht and loose pulleys; a pump-actuating s aft G; a rock-cylinderactuating shaft G a cam-shaft G serving in the operationof starting and stopping the machine; a pawl-equipped shaft G", upon which is'mounted a pawl G coacting with a cam G, mounted on and capable of limited movement with'relation to the shaft G a foot-lever serving to actuate a rod equipped with a pawl H coacting with the cam G; a pressure-controlling valve I, actui ated by the lever G and controlling the admission of air to the piston for actuating the jaws of the rock-cylinder; a gear J, loosely mounted onone end of the shaft G and controlled by a rock-lever J end of the shaft G and actuated by an arm J with which one end-of the shaft Gis equipped; a pump K, having its piston-rod K joined to a crankK on the shaft G; a connecting-rod L joining a crank L. on the shaft G to a rock-arm L the rock-cylinderB; a table M, serving to supacting part-cylindrical jaw b,

' 6 5 the rock-cy port the leaves; pipesN N, which serve alternately as admission and exhaust pipes con-.

nected with the cylinders of the jaw-actuating piston, the admission and exhaust from said pipes belng controlled by the valve 1; a pinion P on the shaft G, meshing with the gear J and with the and intermeshing gears P P on the shafts G G", respectively, providing for rotation of the shaft G at one-half the speed of the shaft G The frame A may he .of any suitable'cone struction. As shown, it comprises side members a a and a connecting member afljoining said side members some distance below their upper ends.

The roclccylinder B, which serves as a leaf confining and holding member, as well as a shifting or'feeding member, preferably comprises one part cylindrical member or jaw b, equipped with trunnions 1), upon oneof which trunnions the'rock-arm' L is secured; a cohavin perfos b cylinders b, locate within rate pivot-In I inder and having connected .to hold them open.

loosely mounted on one serving to actuatev suction device C,

. branch pipes 41* to gear P on the shaft G,"

tact with its seat.

I gear e, mounted upon one therewith pipe-sections b b, which pass axially throu h the trunnions b andare connected wit the pipes N reciprocating piston 67; a jaw-actuating member b, loosely mounted upon the shaft of said piston between collars b 'b on said shaft, the member I) bearing a laterallyprojecting stud b, equipped with rollersb, engaging a slot 1) between the rear or nongripping edges of the jaws, said slot termi nating at one end in an oblique or inclined cam-surface b serving pass beneath it to close the jaws,'and a spring 12 connecting the jaws and serving normally From what has been stated it will be understood that the rock- .cylinder is oscillated through the medium of its trunnion, and it is now apparent that ,N, respectively; a

when the rollers b when the piston is moved from the position shown in Figs. 17 and 19 to the position shown in Figs. 18 and 2.0 it'operates to close the jaws of the rock-cylinder, and when the piston is actuated in the opposite direction the pressure upon the cam-surface b-tis removed and the spring b 'operates to open the jaws. In the opening and clos ng operations mentioned the jaw 1) turns upon the pipes b b as an axis. I

Theleaf confining and holding member or retainer C comprises a bar adjustably conwith the upper nected, by means'of bolts 0,

ends of the side members of the frame. Said member is provided with a longitudinal bore 0 with which communicate minute suctionopenings 0 leading to the under or concave side 0 of the member.- The bore 0 is divided into separate chambers by partitions 0 as shown in Fig.5,and,as shown in Fi 4,there are passages c communicating with t e upper side of the bore, and these passages are connected by the branch pipes c to c, inclusive, of the said suction device. Similarly the member D is adiustably connectedby bolts, 13 pro vided with the bore (1, perforations d, a conca-ve surface (1 partitioned, passages (1 and d, inclusive, connected with the mainpipe d" of the suction device D Valves 0 (Z are provided for controllin the several-branch pipes. shown. I

he pipes c d connect Withpassages a surface of the frame member a, as shown'm Fig.' 6. The 'frame' member a is provided with a perforation e, which receives the crforated stem or shank e of the valve E. I he passage 6 of .the valve E has an .orificeopenwith the main pipe of 1 d, which have orifices opening at the outer ing. at-theground-surface e, which. contacts with the round-surface e her a. T e stem e is connectedby a pipe or hose c with the vacuum-chamber F. The spring e serves to hold the valve in close con- The valve E is equip ed which meshes Wlt a with'a gear-segment e trunnion of the of the frame mem rock-c linder. Thus when the rock-cylinder is osci lated the valve E will be correspondin ly oscillated.

n the construction shown the vacuum and pressure tanks F F are provided by partitioning a cylinder in the manner shown in Fi 4. Normally when the belt is on the fast pu lley the shaft G rotates theshaft G and the gear J, the shaft G operating the pump and the gear J turning idly. When the foot-lever H is depressed, the pawl H serves, through the medium of a small pin or stud g on the cam G, to rotate said .cam on its shaft. Said cam G is provided with a-slot g, with which engages a pin 9 carried by an arm 9 fixed to the shaft G. The pawl or cam-lever G is provided with a projection 9 which normally engages. a depression '9 in the cam G. There is an adjacent depression g in said cam, the purpose of which will be presently explained. The pawl G is equipped with a pin 9 which engages cam-slot g with which the actuating-arm g of the valve I is provided. The slot g? is so shaped that the valve I will be actuated during the first movement of the pawl Gr under the action of the cam G The valve 1 stands normally in position to. admit pressure through the pipe N, whereby the piston will stand normally in a position to permit the spring 6 to open the jaws of the rockcylinder.

The construction of the valve'I is shown in detail in Figs. 12 to 16, inclusive. The frame member a is provided with a boss 11, having a flat surface i whereat opens the orifices of passages i i which are connected, respectively, with the pipes N N. The valve comprises a disk equipped with the actuatingarm g and provided with three perforations if, i and '17. With the intermediate perforation i is connected a hose 1', which in turn connects with the pipe i", joined to the pressure-chamber F. The valve oscillates on the pivot-post i equipped with a spring 71, adjusted by nuts i.

As shown in Figs. 2 and 8 to 11, inclusive, the. gear J is confined betweensleevesor collars j onthe shaft G and the shaft, collars, and gear are provided with the complemental parts'of an opening j which receives a pin 11' having a portion cut away at 7' the surface at the cut-away portion being fiush with the surface of the shaft when the clutch is in the idle position, as shown in Fig. 11. The outer end of the pin or clutch member 7' is equipped A with a short arm 56, which is connected by a spring i with the outer one of the.collars j.

The tendency of the arm :0 is to drop, thereby bringing the clutch member 1' into the operative position shown in Fig. 10. The pawl or trip member J (shown in Fi 2) normally serves to hold the clutch mem er in its inoperative position. When the member J is rocked, however, the clutch member is released from its detent and permitted to assume the operative position. The lower end of the lever J is provided with a slot 7', which receives a pin 3', with which the arm J on the rock-shaft G is provided. The slot 7' is so shaped that while the end 9' traverses its upper portion no movement of the lever J takes place; but while the pin traverses the lower portion of the slot the trip is actuatedto permit the clutch to assume the operative position and put the shaft G into rotation, thereby actuating the rock-cylinder.

The pump K may be of any suitable construction. It is connected with the chambers F F by pipes f f equipped, respectively, with relief-valvesf f Any suitable checkvalves (not shown) may be employed in said pipes and in the pump. The relief-valve f 2 will operate to admit air to the vacuumchamber when the ressure therein falls be low a predetermine point, and the valve f 3 will operate to release air from the chamber F when the pressure therein reaches a predetermined amount. By this expedient a uniform vacuum is maintained in one chamber and a uniform pressure in the other chamber, and the requisite amount of air is supplied to the vacuum-chamber to provide the necessary amount of air for the pressure-chamber, the pump operating, it will be understood, to transfer air from the vacuum-chamber to the pressure-chamber.

The connecting-rod L is connected with the crank L and the rock-arm L b pins and split bearin s, as shown. Springuifers Z Z are provide to limit the movements of the arm L and to aid in the initial return movements of said arm. Where the oscillation of. 4 the rock-cylinder is less than in the construction shown, as would be the case were a larger rock-cylinder provided, the spring-buffers may be dispensed with.

' The table M may be of any suitable construction. Preferably it is supported upon bracket-arms m, connected with the frame by pivots m, and is e nipped with rods m connected with the t. le by pivots m the lower endsof the rods entering sockets m near the base of the frame. This construction permits the table to be dropped to allowready accessto the rock-cylinderand'the attendant parts.

From the foregoing description the operation will be readily understood. As has been stated, the shaft G rotates continuously, thereby operating the pump continuously, and the gear J normally rotates idly. The jaws of the. rock-cylinder stand normally open, as shown in Fig. 4. The operation of the machine is effected by the operator inserting the binding-mar in of theleaf s between the clamping-sur' aces s of the jaws and depressing the foot-lever H. Durin the depression; of the footlever H the aw H operates to rotate the cam G on its s aft, thereby depressing the ca1n-lever G In the first portion of the movement of the lever G the valve I (which, it will be remembered, stands normally in position to admit air to the pipe N) is moved to admit air to the pipe N, thereby causing the jaws of the rock-cylinder to be closed upon the bindin -margin of the leaf, and in the final portion 0 the move ment of the lever G the rock-shaft G operated thereby, acts finally, through the arm J, to move the trip J 2 and permit the clutch to operate on the shaft G As soon as the shaft Gr begins to rotate it sets the rock-cylinder in motion and through the medium thereof turns the valve E in the proper direction to apply suction through the lower member D. In the meantime the leaf is carried between the rockcylinder and the member D, as shown in Fig. 26. The rock-cylinder rotates far enough in this direction to cause a small portion of the leaf to be exposed at the rear side of the mem ber D, and when the rock-cylinder starts on its return movement the leaf is caused to buckle slightly, and during the return movement the leaf is rolled closely upon itself in the manner shown in Fig. 28, it being remembered that suction is acting upon the leaf in the meantime to hold it against the shoe D while the flexing operation is taking place. Before the leaf is released the cylinder moves from its normal intermediate position to one end, ofits' traverse, carrying the leaf beneath the member D, then over to the other end of I its traverse, carrying the leaf beneath the member C, then back again to the first end of its traverse, then again to the second end of its traverse, and finally back to its normal intermediate-position. Thus the leaf is flexed in each direction twice, and this is found. to be sufficient with ordinary ledger-paper to accomplish the desired result. It will be understood, of course, that the machine operates very rapidly, and it may be stated that when the cylinder returns to its normal position and the jaws fly open the leaf, under its own resiliency, springs out of the aws. Subsequently the leaves are suitably compressed to render them compact and flat. It will be observed that the operation is such that the.

machine will automatically stop after completing its cycle of operations regardless of whether the foot-lever H remains depressed or not. It here maybe statedthat the purpose of the depression g of the cam is to permit the cam-lever G to return part way as the cam rotates with the shaft G actuated by the gear P and take up the lost-motion connection with the operating-arm of the valve 1, so that when the depression g passes again beneath the projection g of the cam-lever the cam-lever will move quickly toits normal po'- sition of rest, thereby actuating the valve I to connect the pressure again with the pipe N, whereby the piston b will be actuated. in. a direction to permit the jaws to be opened by the action of their spring. We have shown buffer-rings t for limiting the movement of the piston.

It will be observed that our im rovedmachine provides for flexing the lea along lines infinitely close to each other and while the leaf isbent closely upon itself first in one direction and then inthe other and has a oertain amount of pressure a plied, still the continuous shifting of the ine of fiexure prevents the establishment of definite lines of weakness in the treated zone of the paper,the result being that greatly-increased flexibility is obtained Without appreciably injuring the fiber of the paper and without destroying the surface at the treated zone for writing .urposes. Because of the fact that no de 'te lines of weakness are established it is'possible to treat the leaf from the extreme top edge to the bottom edge without rendering the leaf liable to be tornj By providing the partitions in the longitudinal bores of the members 0 and D and controlling the exhaust through the several chambers thus established by means of separate stop-cocks it is possible toadjust the machine to any desired width of leaf, as will be readily understood.

While wehave shown a machine complete in all its details and adapted to be operatedby unskilled persons, still it will be understood that the machine may be altered in many Ways while retaining many of its features of advantage. For instance, in Fig. 25 we have represented a modification wherein B represents a rock-cylinder, and C D friction-rollers coacting with the cylinder B and constituting, in effect, leaf confining and holding members. In this construction the suction devices are dispensed with and the rollers C D are geared through an idler v to the cylinder B. The gearing is such that after the leaf has been carried through the required distance the friction-roller with which it is in engagement rotates in the directi on opposite to thedirection of movement of the returningrock-cylinder, thereby preventing the leaf from slipping while the rockcylinder returns with the gripped edge.

Many other changes in details within the,

spirit of our invention may be made. Hence no undue limitation should be understood from the detailed description given, the same having been given for clearness of understanding only.

The gist of the invention lies in providing relatively movable leaf-confining members having the function of flexing the leaf, associated with means for shifting the leaf to produce change in .the line ofcurvature in the leaf, along very closely-related lines. Obviously the member B acts as a leaf-confining member, as do also the members C and D.

So, also, the member B is equipped with leafholding (retaining) means'l. 6., its jawsand'the members O and D are equipped-with lcaf-holding means e. the suction devices.

' Inaddition the member B by virtue of jaw-- equipment and place of flexure through lines inappreciably' leaf to shift while the'flexmg 1s performed.

actuating (rocking) means serves in the shiftin of the leaf. In the broadest sense, there ore, the rocking member B is to be regarded as a leaf-confining member, and, when jaw-equipped, it is to be regarded as a leaf confining and holding member, and. when so equipped and also provided with oscillating means is to be regarded as a leaf confining, holding, and shifting member. We believe that the simplest arrangement is to-combine the parts inthe precise-manner shown; but the characteristic functions noted may be present even though t is construction may be varied.

at we regard as new, and desire to se cure by Letters Patent, is

Ina machine of the character described, means for confining a leaf and flexing it throughout a limited zone, said means varying the place of flexure through very closely adjacent lines and causing a portion of the 2. In a machine of the character set forth, means for confining a leaf and flexing it throughout a limited. zone, said means including relatively moving leaf-confinin members between which the portion of the leaf under treatment may be shifted and operating to vary the place of flexure through very closely a j acent lines and causing a portion of the leaf to shift while the flexing function is performed.

3. In a leaf-flexing machine, means for flexing the leaf upon itself and shifting the removed from each dther including leaf-gripping means, for the purpose set forth.

In a leaf-flexing machine, means for flexing the leaf upon itself in two directions along very closely related lines, throughout a limited zone including leaf-gr1pping means,

for the purpose set forth.

. to apply a member in 5. In a leaf-flexing machine, the combination of curved leaf confining and holding devices, and means for producing relative movement of said devices and causing them shifting flexure to the leaf in one direction and. then in the reverse direction bver the same area, throughout a given Zone, for the purpose set forth.

6. In leaf-flexin machine, the combination of relatively movable leaf confining and holding devices, operating to bend the leaf upon itself about a very small radius and shift the place of bending, for the purpose set forth.

7. In a leaf-flexing machine, the combination of a rocking member equipped with gripping means, and a leaf confining and holding juxtaposition therewith, said members ser ing to fold a leaf between them and shift the line ited acne, for the purpose set forth.

8. In a leaf-flexing machine, the combinathe section of flexure throughout a lin1- ping means, and a leaf confining and holdin 4 her in juxtaposition therewith equippe with a suction device, said'members serving to fold a leaf between them and shift the line of flexure throughout a limited zone, for the purpose set forth. f

, In a leaf-flexing machine, the combination of a rocking member e ui' ped with means for holding the margin a cat, and a juxtaposed member coacting with said rocking member equipped with a suction device having orifices opening near its front portion adjacent to said rocking member, whereby a may be drawn between said members, the suction ap lied to'the leaf adjacent to to fie flexed, and the leaf folded upon itself in the return movement of the rocking member, for the purpose set forth.

10. In a machine of the character described, the combination of a rocking member equipped with jaws having the grippingspace between them accessible in the normal position of rest, and a confining and holding members adjacent to said first-named member and arranged on opposite sides of said space, said rocking member having a range of movement enabling it to carry the leaf between the rocking member and each of said second-named members, for the purpose set forth.

11. Ina leaf-flexing machine, the combination of a frame, a table, a jaw-equipped rocking cylinder normally occupying a position with its gripping-plane adjacent to the rear edge of said table, and a pair of leaf confining and holding members arranged above and below the plane of said table, for the purpose set forth. m i r 12. In a machine of the character set forth, the combination with: a rocking member e uipped with means for holding a margin of a leaf, a pair of juxtaposed concave's, and suction devices having orifices opening near the front edges of the set forth- I 13. In a machine of the character set forth, the combination of a rock-cylinder equipped with jaws, means for actuating the jaws, .a' pair of concave/s, suction devices connected with said concaves, and means for controlling the suction, for the purpose set forth.

14.] In a machine of the character de scribed, the combination of a roelecylinder equipped with pneumatically-actuated jaws, and a leaf confining and holding member adjacent to said rock-cylinder, and operating in conjunction with the cylinder to flex a leaf and shift the place of flexure uniformly throughout a given zone, for the purpose set orth.

of leaf confining and holding members adj apair of coacting. leaf IIO ' cent to said cylinder and on opposite sides of purpose set fort I 16.- In a machine of the character set lorth,

the combination of a jaw-equipped rock-cylinder having normally open jaws, means for closing the jaws, and a pair of concaves adjacent to the cylinder on opposite sides of the normal gripping-plane of the jaws equipped with suction devices havingorifices at the front portions of said second-named members,

for the purpose set forth.

' 17. In a machineof the character set forth, the combination of a rock-cylinder equipped with grippers and pneumatic actuating means for the grippers, a leaf confining and holding member equipped with a suction device, a pump, and pressure and vacuum chambers connected with said pump and respectively joined to said pneumatic actuating means and said suction device, for the purpose set forth.

1-8; Ina machine of the characterset forth, the combination .of a rock-cylinder equipped with jaws, a pis-ton movable longitudinally of the rock-cylinder and serving in the actuation of the jaws, and'a leaf confining :and holding member serving in. conjunction with the rock-cylinder to bend a leaf upon itself and vary the lineco'f flexure, for the purpose set forth.

19. In a machine of the characterset forth,

the-combination of a cylinder equipped with gripping-jaws, a jaw-actuating piston movable longitudinally in said cylinder, and a leaf confining and holding member adjacent to: the cylinder and acting in conjunction with thecylinder to fold a leaf upon itself and vary the line of flexure said last-named member and the cylinder being relatively movable, 1 for the purpose set forth. 20. In a machine-of the character set forth, the combination of a rock-cylinder provided with gripping-jaws and equipped internally.

with cylinders, a jaw-actuating piston, pipes communicating through the journals of sai rock-cylinder with said internal cylinders, a valve controlling said pipes, means for actuatingsaid valve in one direction, anda leaf confining and. holding member coacting with I said rock-cylinder, for the purpose set forth.

21. In a machine of the character set forth,

the combination of a rock-cylinder equipped with grippers, means for actuating the grip ,pers, means f our-actuating the rock-cylinder, aleaf confining and holding memberadjacent' to the rock-cylinder, and mechanism for con-- trolling the movements of said cylindrc'omprising means for setting the cylinder in motion, and automatically-actuated -means for stopping the cylinder, for the purpose setv forth,

22. In a machine of tlie character set forth, the combination of a rock-cylinder equipped. with grippers, means for actuating the grip.-

pers, means for actuating the rock-cylinder, a leaf coniming'and holding member ad acent to the rock-cylinder, and mechanism for conthe actuation of its grippers, comprising means for governing the closing of the grippers of the cylinder and setting the machine in motion, and automatic. means for governing the stopping of the cylinder and opening the-grippers, for the purpose set forth.

23. In a machine of the character set forth, the combination of a rock-cylinder equipped with grippers, pneumatic means for closing said grippers, a'leaf confining and holding member adjacentto said cylinder, and controlling mechanism comprising a normally inactive shaft connected with said cylinder, a continuously-rotating member, a clutch for connecting the normally inactive shaft, a suitably-actuated cam, means for actuating said cam to operate said clutch, and means for automatically continuing the movement of said cam, whereby the cam serves to release said clutch after the machine has completed its cycle of operations, for the purpose set forth. v

24. In a machine of the character set forth, the combination with a rock-cylinder provided with gripping jaws and pneumatic means for actuating the same, a leaf confinin and holding member adjacent to said cylinder, a valve controlling the admission to said cylinder, a normally inactive shaft connected with .s'aid cylinder, a clutch through the medium of which said shaft may he actuated, and mechanism whereby said cam serves, in its initial movement, to actuate said valve, clutch into operation, and finally to release said clutch after the machine has completed its cycle of operations, for the purpose set forth.

25. In a machine of the character set forth, the combination of a rock-cylinder equipped with gripping-jaws, pneumatic means for actuating said jaws, a valve controlling the admission to said pneumatic means, concaves adjacent to said -c linder e uipped with suction devices, a va ve contro ling said suction devices, means for actuating said cylinder, and mechanism manually actuated in the operation of startingthe machine and automatically actuated-in the operation of stopping the machine, whereby, in a cycle of opera tions of the machine, said jaws are closed after a leaf is introduced, said cylinder set in motion, the suction a plied alternately to said suction devices, to cylinder stopped, and the jaws released, for the purpose set "forth.

- the combination with a rock-cylinder, of a pair of concaves coacting therewith and equipped with suction devices, a valve controlling said suction devices, and valve-actutrolling the movements of the cylinder and 25. Ina machine of the character set forth,

and thereafter to throw said ating means operated from said cylinder, for] the'p'urpose set forth.

27. In a machine of the character set forth,

thecombination of a rock-cylinder having. a

jaw'e'quipped with trunnions and a relatively movable jaw, actuating means for the cylinder connected with one of said trunnions, ac-

tuating means for said second-named jaw,

and a leaf confining and holding'member adto said cylinder, for the purpose set forth.

29. In a machine of the character set forth,

the combinationof a rock-cylinder and a concave adjacent thereto equipped with a suction device, said suction device being provided with means for limitin the extent whereat the suction is applied, w ereby leaves of different width may be treated, for'the.

purpose set-forth.

30. Ina; machine of the character set forth, the combination of av rock cylin'der provided with pneumatically-actuated jaws, concaves adjacent thereto equipped with suction devices, and actuating and controlling means,

comprising a normally inactive shaft, a clutch for the same, a shaft geared to said first-named shaft, a cam mounted thereon and capable of limited movement: with relation thereto, a cam-lever, manual means for initially moving sald cam, and valves controlling the pneumatic pressure and the suction, for the purpose set forth'. v

31. In a leaf-flexing machine, the combination with leaf confining and holding members, of a normally inactive shaft from which one of said members is actuated, a .clutch therefor, a second shaft geared to the, firstnamedshaft, a cam having lost-motion connection with said second-named-shaft, a camlever, a valve operated thereby, and a trip on said second named shaft controlling said clutch, for the purpose set forth. l

32. The. combination ofa rock cylinder having pneumatically actuated grlppingjaws, pipes leading to said cylinder, a valve controlling said pipes, a foot-lever controlling said valve, and alcaf confining and holdinglrnemberadjacent to said cylinder, for the 1 to, concaves e nipped with suction devices,

a valve control ing the suction devices, a normally inactive shaft joined to said rock-cylinder, a second shaft geared to said first-named shaft, a clutch for the first-named shaft controlled by the second-named shaft, a cam hav-- ing lost-motion'connection with the secondnamed shaft, acam-lever coacting with said cam and controlling said first-named valve,

means formoving said cam to operate said first-named valve and said clutch, and actuating means for the second-named valve, for

the pur ose set forth. 34.- n a leaf-flexing machine, the combination with a frame member having air-passages opening at a flat surface, a spring-held rotary valve having a fiat surface engaging said first-named surface, an oscillating member equipped with leafgripping jaws,- and pneumatic jaw-actuating means connected with the air-passages of said frame member, for the purpose set forth. I

35. The combination of a rockcylinder equipped with gripping-jaws, means for turning said rock-c linder, a concave equipped with a suction evice, a valve control ing the suction, and gear connection between sald rock-cylinder and suction-controlling valve, for the purpose set forth. 36. The combination. of a rockcylinder equipped with grippers, a coact ing leaf-confining member equipped with a device for holdin a leaf at a pointnear the area to be treate and mechanism serving to close said rippers, turn the cylinder, apply holdin force to the leaf through said second-name member, reverse the cylinder, and open the grippers, for the purpose set forth.

37. The combination of a rockcylinder equipped with gri pers, a pair of coacting leaf confining an f holding members, an

mechanism serving to close the grippers, impart to said cylinder a plurality of reci rocations in each direction from its norma posi; tion of rest, and then open the grippers, for the purpose set forth.

HARRY SLOPER JONES. WILLIAM GIFFORD JONES.

In presence of- M. S. MACKENZIE, J. H. LANnEs. 

